wmclock: Choose language with ./configure.

This is a feature that was present in the pre-autotools configure script.

Note a syntax change:
./configure --lang foo
is now
./configure --with-lang=foo

Also remove the .xpm files in the root directory, as they are created during
configuration.

wmclock/Makefile.am

@@ -1,5 +1,5 @@
 bin_PROGRAMS = wmclock
-wmclock_SOURCES = dynlist.c dynlist.h wmclock.c month.xpm weekday.xpm \
+wmclock_SOURCES = dynlist.c dynlist.h wmclock.c \
 	xpm/date.xpm xpm/led.xpm xpm/mask.xbm xpm/mask.xbm
 AM_CFLAGS = $(x11_CFLAGS) $(xpm_CFLAGS) $(xext_CFLAGS)
 LIBS += $(x11_LIBS) $(xpm_LIBS) $(xext_LIBS)

wmclock/configure.ac

@@ -2,6 +2,26 @@ AC_INIT([wmclock], [1.0.14])
 AM_INIT_AUTOMAKE([foreign subdir-objects])
 AC_CONFIG_SRCDIR([configure.ac])
 AC_PROG_CC
+
+define([langlist], esyscmd([ls -d lang.* | sed 's/lang.//']))
+AC_ARG_WITH([lang],
+	AS_HELP_STRING([--with-lang],
+	[Configure wmclock to use day and month names for the specified
+	language.  Defaults to 'english'.  Choices are: ]
+	langlist),
+	[],
+        [with_lang=english])
+
+LangDir="lang.${with_lang}"
+if test ! -d "${LangDir}"; then
+   AC_MSG_ERROR([Cannot find language directory '${LangDir}'.])
+fi
+
+echo "configuring for ${with_lang} day-of-week and month names..."
+rm -f month.xpm weekday.xpm
+ln -s "./${LangDir}/month.xpm" .
+ln -s "./${LangDir}/weekday.xpm" .
+
 PKG_CHECK_MODULES([x11], [x11])
 PKG_CHECK_MODULES([xpm], [xpm])
 PKG_CHECK_MODULES([xext], [xext])

wmclock/month.xpm

@@ -1 +0,0 @@
-./lang.english/month.xpm

wmclock/weekday.xpm

@@ -1 +0,0 @@
-./lang.english/weekday.xpm